You can bring seeds on an international flight, but airline rules are the easy part; the real gatekeepers are the agricultural authorities of the country you’re flying into. Most destinations require official paperwork proving the seeds are free of pests and disease, some seeds are banned outright, and every country expects you to declare seeds at customs on arrival. Skip the declaration in the United States and a first-time traveler can be fined around $300 on the spot, with statutory penalties reaching $50,000 for willful or repeat violations.
Seeds sit outside standard airline screening because they can carry fungal spores, insect larvae, and plant diseases that inspectors can’t see. That’s why every country runs a separate agricultural inspection at the border, entirely independent from the security you clear at the departure gate. In the U.S., the Animal and Plant Health Inspection Service (APHIS) sets the rules and Customs and Border Protection (CBP) enforces them at the port of entry.1U.S. Customs and Border Protection. Bringing Agricultural Products Into the United States
The Paperwork You’ll Likely Need
Two documents come up in almost every international seed transaction: a phytosanitary certificate and an import permit. Whether you need one, both, or neither depends on the seed species, the quantity, and where you’re flying.
Phytosanitary Certificate
A phytosanitary certificate is an official government document confirming that a shipment of seeds has been inspected and found free of harmful pests and diseases. To bring seeds into the United States, the certificate must be issued by the plant protection agency of the country you’re departing from.2Animal and Plant Health Inspection Service. International Travel: Plants, Plant Parts, Cut Flowers, and Seeds To take seeds out of the U.S., you need one from APHIS, which involves submitting PPQ Form 572 and having the seeds physically inspected.3eCFR. 7 CFR Part 353 – Export Certification
APHIS charges $61 for a non-commercial export certificate (shipments valued under $1,250) and $106 for commercial shipments.4Animal and Plant Health Inspection Service. User Fees for Export Certification of Plants and Plant Products State inspectors doing the work on behalf of APHIS may add their own fee, typically $25 to $30.
Import Permit
Most seeds entering the U.S. also require a PPQ 587 import permit, applied for through the APHIS eFile system. The application is free, but processing can take up to two months, so start well before your trip.5Animal and Plant Health Inspection Service. Seeds With Special Requirements and Prohibited Seeds The eFile process will tell you whether your specific seed also needs a phytosanitary certificate.
Finding Another Country’s Rules
If your destination isn’t the U.S., check that country’s ministry or department of agriculture before you fly. Traveling from the United States, you can use the APHIS Phytosanitary Export Database (PExD) to look up what the destination requires for U.S.-origin seeds.6USDA APHIS. Phytosanitary Export Database – View Country Information That saves you from navigating a foreign agency’s website in a language you may not read.
The Small Lots of Seed Shortcut
The U.S. offers a useful exception for gardeners and hobbyists. Under the Small Lots of Seed program, you can import seeds into the U.S. with just the PPQ 587 permit and no phytosanitary certificate, as long as every one of the following is true:7Federal Register. Importation of Small Lots of Seed Without Phytosanitary Certificates
- Each packet holds no more than 50 seeds or 10 grams of a single species, and the whole shipment contains no more than 50 packets.
- Every packet shows the collector or shipper’s name, country of origin, and the scientific name (at minimum the genus).
- The seeds are clean: no soil, no other plant material, no pesticide residue, no insects or snails.
- The seeds are sealed in packets or envelopes so they can’t spill.
- The species is eligible: not a federally listed noxious weed, not one that needs special treatment or extra phytosanitary declarations, and not from a woody plant like a tree.5Animal and Plant Health Inspection Service. Seeds With Special Requirements and Prohibited Seeds
Miss any single condition and you’re back to needing the full phytosanitary certificate.
Seeds That Are Banned or Restricted
Some seeds you cannot bring in no matter what paperwork you carry.
Federal Noxious Weeds
The USDA maintains a list of species classified as noxious weeds, and there is zero tolerance for their seeds at the border. Even one such seed mixed in with legal ones triggers confiscation. The list runs to well over a hundred species, including all species of Cuscuta and Striga, aquatic invaders like water hyacinth and hydrilla, and terrestrial aggressors like giant hogweed.8eCFR. 7 CFR 361.6 – Noxious Weed Seeds The eFile permit application will flag any species on the list.
Country-of-Origin Bans
Other seeds are banned only when they come from specific countries. Coconut seeds are prohibited from everywhere except Costa Rica and Jamaica because of lethal yellowing disease. Wheat seeds are restricted from most origins, with Canada, Argentina, and France among the short list of allowed sources, because of Karnal bunt. Mango seeds are banned from any country not on APHIS’s approved list because of the mango seed weevil. Barberry seeds are prohibited from every country, because they can carry black stem rust.9Animal and Plant Health Inspection Service. Plants for Planting – Specific Plant Restrictions
CITES-Listed Species
Seeds from plants listed under the Convention on International Trade in Endangered Species (CITES) require an additional permit from the U.S. Fish and Wildlife Service, on top of any USDA paperwork, even for personal use.10U.S. Fish and Wildlife Service. CITES Many cacti, orchids, and cycads are on the list, so check the CITES appendices before collecting seeds of unusual plants abroad. Bringing in seeds of a protected species without the right permits can trigger criminal penalties under the Lacey Act of up to $20,000 and five years in prison for a knowing violation.11GovInfo. U.S.C. Title 16 – Conservation – Chapter 53
Cannabis and Hemp
Cannabis seeds with more than 0.3% THC are a federally controlled substance, and importing them is illegal regardless of state law or the laws of the country you’re flying from.12U.S. Customs and Border Protection. Importing Hemp Seeds and Hemp Plants Into the United States Hemp seeds, defined as those at or below 0.3% THC, were removed from the controlled substances schedule by the 2018 Farm Bill and can legally be imported, but they still have to clear APHIS agricultural inspection and be certified free of pests. The practical hurdle is proving THC content at the border; if CBP can’t verify it, expect the seeds to be held or seized while testing is done.
Packing and Declaring the Seeds
TSA allows seeds in both carry-on and checked bags, so the airport security checkpoint isn’t the concern.13Transportation Security Administration. Planting Seeds Customs after you land is.
Keep seeds in their original commercially labeled packaging when you can. Labels showing the species name, country of origin, and seller speed up inspection and reduce the chance of a misidentification that ends in confiscation. Put the seeds in your carry-on so you can hand them to the agriculture specialist without waiting on checked luggage. And make sure the seeds are completely dry and free of soil; the USDA prohibits any plant material with sand, soil, earth, or other growing media attached, and the small lots exception also excludes seeds still inside a fruit or seed pod.
When you arrive in the U.S., declare the seeds. On the paper CBP Form 6059B, answer “Yes” to Question 11, which covers agricultural products including seeds.1U.S. Customs and Border Protection. Bringing Agricultural Products Into the United States The Mobile Passport Control and CBP Link apps ask the same question electronically. Present your passport, the declaration, the seeds, and any phytosanitary certificate or import permit to the agriculture specialist, who will verify the paperwork and check the seeds for visible contamination.
The single most valuable rule: declare honestly. If you declare seeds that turn out to be prohibited, they get confiscated and you walk away with no fine. If you don’t declare seeds and an inspector finds them, you’re penalized even if the seeds were legal to bring in.
What Happens If You Don’t Declare
Under the Plant Protection Act, a first-time individual not importing for profit faces a civil penalty capped at $1,000.14Office of the Law Revision Counsel. 7 USC 7734 – Penalties for Violation In practice, CBP frequently issues around $300 for first-time agricultural declaration failures.15U.S. Customs and Border Protection. CBP Stands Tall on the Agriculture Front, Uncovering Violations Repeat or apparently deliberate violations climb sharply: the statutory maximum for an individual is $50,000 per violation, and violations adjudicated together can reach $1,000,000 if any are found willful.
Trusted traveler status is also on the line. CBP has revoked Global Entry memberships over undeclared agricultural items, including a case where a traveler arriving from India lost his membership and paid a $500 penalty for failing to declare rice and peanuts.16U.S. Customs and Border Protection. CBP Revokes Global Entry Membership; Traveler Fails to Provide Truthful Declaration Losing Global Entry over seeds you could have imported legally by checking a box stings for years.
Flying Out of the U.S. With Seeds
Going the other direction, you comply with the destination country’s import rules, not U.S. export rules. Most destinations require a phytosanitary certificate issued by APHIS, which means scheduling an inspection and paying the user fee ($61 non-commercial, $106 commercial) before you leave.4Animal and Plant Health Inspection Service. User Fees for Export Certification of Plants and Plant Products Use the APHIS Phytosanitary Export Database to confirm what your destination requires.6USDA APHIS. Phytosanitary Export Database – View Country Information Apply as far ahead as you can, because some destinations require specific treatments or testing that add time. Arriving abroad with seeds and no certificate almost always ends with the destination’s customs officers confiscating them, and there’s no appeal from a foreign inspector’s decision at the border.